There is too much general theoretical material (e.g., about addiction, alcohol, emotion as separate constructs). Instead, summarise and link to further information (e.g., there have been previous relevant book chapters about addiction), to allow this chapter to focus on the specific topic. This is a relatively common problem, particularly with early drafts.
Some basic relevant neurophysiological theory is described and explained.
The emphasis of the chapter in on negative emotional effects, with no consideration of potential positive effects (e.g., via self-awareness, self-reflection etc. as part of a recovery progress - e.g., see literature on post-traumatic growth).
When describing important research findings, consider including a bit more detail about the methodology and indicate the size of effects in addition to whether or not there was an effect or relationship.
Greater emphasis on major reviews and meta-analyses would be helpful.
Some statements are unreferenced (e.g., see the [factual?] tags).
There's a time and a place for a personal journey story, but for an academic third-year psychology synthesis of literature, use third person perspective, rather than first person (e.g., "we") or second person (e.g., "you") perspective. The key goal here is to demonstrate synthesis of the best available peer-reviewed academic literature that applies to a specific, unique problem/topic and to draw practical recommendations that apply as widely as possible.
Obtaining (earlier) comments on a chapter plan and/or chapter draft could have helped to improve the chapter.